I've seen a number of house rules for altering the dificulty of the game but I was wondering if anyone had any house rules for improving the story behind the game.
I think the game is great and so is the mythos it is based on but the one part of the game that annoys me is how the monsters appear at random, elder things and deep ones shouldn't be coming though the same gate and teaming up to fight the investigators.
Since playing with the black goat of the woods herald, which seperates monsters of a certain dimension symbol into a seperate monster cup at the start of the game, I have been thinking of using seperate piles of monsters for each of the dimensional symbols. When a monster comes through a gate I will draw a monster of a symbol that matches the gate, this means that elder things will always come from the plateau of leng and deep ones will come from r'lyeh. To me this seems to support the mythos that the game is based on.
If I run out of monsters of the correct dimensional symbol I'll close the gate, without removing monsters of the same symbol, if this happens the investigators have missed out closing/sealing the gate.
When a mythos card forces monsters to be spawned I use monsters of a cresent symbol as these represent earthbound monsters.
Does anyone play using a similar rule or use any other custom rules to improve the theme of the game?

